Datasheet

Section 8 I/O Ports
Rev.7.00 Dec. 24, 2008 Page 249 of 698
REJ09B0074-0700
Table 8.53 PC0 Pin Function
Operating Mode Modes 4 and 5 Mode 6 Mode 7
PC0DDR ⎯ 0 1 0 1
Pin Function A0
output pin
PC0
input pin
A0
output pin
PC0
input pin
PC0
output pin
8.8.6 Port C Input Pull-Up MOS States
The port C has an on-chip input pull-up MOS function that can be controlled by software. The
input pull-up MOS can be used in modes 6 and 7, and can be specified as the on or off state for
individual bits.
Table 8.54 summarizes the input pull-up MOS states.
Table 8.54 Input Pull-Up MOS States (Port C)
Pins
Power-On
Reset
Hardware
Standby
Mode
Manual
Reset
Software
Standby
Mode
In Other
Operations
Address output (modes 4 and 5),
port output (modes 6 and 7)
Off Off
Port input (modes 6 and 7) On/Off
Legend:
Off: Input pull-up MOS is always off.
On/Off: On when PCDDR = 0 and PCPCR = 1; otherwise off.